Evidence map›Paper›PMID 35614303›Full record

ArticleScientific reports2022

Effect of heat exposure on the growth and developmental competence of bovine oocytes derived from early antral follicles.

Kohei Kawano, Kenichiro Sakaguchi, Chelenga Madalitso, Nattapong Ninpetch, Shintaro Kobayashi, Eri Furukawa, Yojiro Yanagawa, Seiji Katagiri

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Heat-Induced Pathophysiological and Metabolic Changes at the Feto-Maternal Interface Predisposing to Preterm Birth.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  10. Review
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  12. Review
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  15. Effects of orange peel extract (Veterinary world · 2024
    Article
  16. Article
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  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Kohei KawanoLaboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Kenichiro SakaguchiLaboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan. ksaka@vetmed.hokudai.ac.jp.
Chelenga MadalitsoLaboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Nattapong NinpetchLaboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Shintaro KobayashiLaboratory of Public Health, Department of Preventive Veterinary Medicine, Faculty of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Eri FurukawaLaboratory of Theriogenology, Graduate School of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Yojiro YanagawaLaboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan.
Seiji KatagiriLaboratory of Theriogenology, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, N18, W9, Kita-ku, Sapporo, 060-0818, Japan. katagiri@vetmed.hokudai.ac.jp.
Hokkaido University · JPLilongwe University of Agriculture and Natural Resources · MW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In dairy cows, low fertility caused by summer heat stress continues into the cooler autumn season. This can be caused by impaired oocyte quality in small growing follicles during summer. Here, we subjected oocyte-cumulus-granulosa complexes (OCGCs) derived from early antral follicles (0.5-1 mm) to in vitro growth (IVG) culture under two different temperature settings (the control and heat shock groups), and evaluated effects of heat exposure on growth and developmental competence of oocytes, factors affecting the developmental competence of oocytes (steroidogenesis of granulosa cells, oxidative stress in oocytes, and cell-to-cell communication between oocytes and somatic cells). Oocyte diameters after culture were smaller in the heat shock group. Although nuclear maturation and cleavage rates were similar between the groups, blastocyst rates were lower in the heat shock group (0.0%) than in the control group (27.7%), and reduced glutathione (GSH) levels in oocytes were lower in the heat shock group. Supplementation of cysteine, which stimulates GSH synthesis, increased GSH level and improved blastocyst rate of heat shocked oocytes (27.9%). These results suggest that heat exposure impairs the growth and developmental competence of oocytes in early antral follicles through GSH depletion, which can induce low fertility during summer and the following autumn.

Indexed as

OocytesOvarian FollicleAnimalsBlastocystCattleFemaleGranulosa CellsHeat-Shock Response

Identifiers

PMID35614303
PMCPMC9132889
OpenAlexW4281477124

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.